Long Description(E.E.): The first phase of English Gothic architecture, predominant in the period c.1180-c.1250, and making use of the pointed arch for openings and vaulting. Sometimes called lancet style from its use of single narrow windows. These can be grouped together to form plate tracery. Larger arches frequently have narrow multiple mouldings, heavily undercut. Stiff-leaf ornament in high relief, and compound piers (i.e. with groups of shafts), often making use of Purbeck marble, are also characteristic of the period.